Question

我有这个架构：

[
  {:db/id #db/id[:db.part/db]
   :db/ident :atr/amount
   :db/valueType :db.type/bigdec
   :db/cardinality :db.cardinality/one
   :db/fulltext false
   :db.install/_attribute :db.part/db}

  {:db/id #db/id[:db.part/db]
   :db/ident :atr/clientId
   :db/valueType :db.type/string
   :db/cardinality :db.cardinality/one
   :db/fulltext true
   :db/doc "The client who owns this atr"
   :db.install/_attribute :db.part/db}

  {:db/id #db/id[:db.part/db]
   :db/ident :atr/currency
   :db/valueType :db.type/string
   :db/cardinality :db.cardinality/one
   :db/fulltext true
   :db.install/_attribute :db.part/db}

  {:db/id #db/id[:db.part/db]
   :db/ident :atr/valueDate
   :db/valueType :db.type/instant
   :db/cardinality :db.cardinality/one
   :db/fulltext true
   :db.install/_attribute :db.part/db}

  {:db/id #db/id[:db.part/db]
   :db/ident :community/reference
   :db/valueType :db.type/string
   :db/cardinality :db.cardinality/one
   :db.install/_attribute :db.part/db}
]

我尝试插入这些数据：

[
    {:db/id 1, :atr/amount 10, :atr/currency "USD", :atr/clientId "clientId", :atr/valueDate "2014-02-14"}
]

我收到此错误消息：

Caused by: java.lang.IllegalArgumentException: :db.error/wrong-type-for-attribute Value 10 is not a valid :bigdec for attribute :atr/amount

如何描述要导入datomic的bigdec数据？

Answer 1

在这种情况下，您需要使用适当的数据文字来表示值（使用M表示BigDecimal）：

(def foo-tx
  [
    {:db/id (d/tempid :db.part/user)
     :atr/amount 10M
     :atr/currency "USD"
     :atr/clientId "clientId"
     :atr/valueDate #inst "1985-04-12T23:20:50.52Z"} ;;)(new java.util.Date)}
   ])

或以其他方式创建正确的值类型（与下面的日期一样）：

(def foo-tx
  [
    {:db/id (d/tempid :db.part/user)
     :atr/amount 10M
     :atr/currency "USD"
     :atr/clientId "clientId"
     :atr/valueDate (new java.util.Date)}
   ])

这两个示例都将针对您的架构进行正确的交易。

如何导入：bigdec数据到datomic

1 个答案: